Okumura Lydia. (2003). Solfege 2. Berklee College of Music.
Chicago-čujuhus (17. p.)Okumura Lydia. Solfege 2. Berklee College of Music, 2003.
MLA-čujuhus (9. p.)Okumura Lydia. Solfege 2. Berklee College of Music, 2003.
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